Petehs



- To all whom t't may concern:

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HENRY JAMES, OF HUDSON, NEW YORK, ASSIGNOR TO HIMSELF AND WILLIAM H.GIFFORD, OF THE SAME PLACE.

IMPROVED ADJUSTABLE REAMER.

The Schedule `nai'errec to in these Letters Patent and making part ofthe s-ame.

Be it known that I, HENRY JAMES, of Hudson, in the county of Columbia,and State of N ew York, have invented a new and useful Improvement inAdjustable Beamers; and I do hereby 'declare that the following' is afull, clear, and exact description thereof, which will enable othersskilled in the art to make and use the saine, reference being had to theaccompanying drawings, forming part of this specification.

This invention relates to improvements in adjustable reamers; and l v Itconsists in providing the stock, or shank of 'a reamer, with alat head,having recesses adapted to receive the cutters, adjusted by a screw-nut,and attached to the slotted wings, or recessed portions of said head, bymeans of bolts, as will be hereinafter more fully described.

Figure l represents a side elevation of myimproved reamer, when arrangedto carry two cutters;

Figure 2 is also a side elevation, taken at right angies to fig. l; and

Figure 3 represents an elevation of a stock, as arranged for three ormore cutters. i

Similar letters of reference indicate corresponding parts. 1

A represents the stock, having a flat end arranged fortwo cutters, eachface of the flat end being rebated,

-or recessed at one side, to' form the seats for the cutters, asrepresented at B, the walls of the said recesses, against which theinner edges of the cutter bear, being inclined, as represented at C; andslots, D, are made through the recessed portions of the part A, alsoinclined, to agree with the Walls D.

E represents the cutters, the inner edges of which have inclinations,also, corresponding to the walls D,

and bear against them. p

They have also notches, F, at their upper ends, taking over the annularring G, of the nut H, screwing back and forth ou the shank I of thestock.

The said cutters are attached to the stock, and held in the saidrecesses by bolts, K, passing through holes therein and the slots in thestock.

The movement of the nut H,'in either direction, will cause acorresponding movement of the cutters, as will be readily understood.

The bolts may, if found necessary, be tightened up, after the cuttershave been adjusted to the right position, to prevent chattering.

The modification of my invention shown in fig. 3, represents a reainerhaving a conical head, with wings, or flanges, L, the slots in thelatter being parallel to vthe sides of the cone, and the cutterscorrespondingly curved on their inner inclined edges. This constructionis necessary only when it is desired to use more than two cutters.

Having thus described my invention,

I claim as new, and desire to secure by Letters Patent- The stockA,having the dat head C recessed, to receive the cutters E E, attachedthereto by the bolts K, workin g in the inclined slots D, formed in thewings, or recessed portions of' said head, and adjusted by the nut H, onthe shank I, all constructed as herein set HENRY JAMES.

forth, for the purpose specified.

lVitnesses:

A. J. GIFEORD, T. M. POWER.

